Since they meet the high WD standards for quality and reliability, WD Blue notebook hard drives provide exactly the features needed for daily mobile work. Developed and manufactured with the technology found in WD's original award-winning desktop and notebook hard drives. Available in a wide range of entry-level capacities, cache sizes, form factors, and interfaces. WD tests hundreds of systems, configurations, and a variety of platforms so that customers can trust the drives. With the highest possible storage density in the smallest space, mobile WD Blue hard drives offer maximum capacity for your notebook.